Buffing wheel



Sept. 12, 1950 G. R. CHURCHILL BUFFING WHEEL 3 Sheets-Sheet 1 FiledApril 29, 1948 6 /.WY 2 7. 1M n w 0 W 6 0 4 N cr M 2 W 4 w r J 4% a. 9 6W 0U 6 6 2 a 4 1% o s p 1950 G. R. CHURCHILL 9 BUFFING WHEEL Filed April29, 1948 3 Sheets-Sheet 2 INVENTOR.

George Q C0r A/// a. S-l-J; qlwgm Patented Sept. 12, 1950 ES PATENTOFFICE BUFFIN G WHEEL George qhurchill, Hingham, Mass. Application-April29, 1948, Serial No. 24,057

a This invention relates to a bufling wheel.

The invention has for an object to provide a novel and improved .buffingwheel of the type comprising a plurality of individual sections adapted,to be mounted on an arbor and clamped together to produce a buffingwheel ofthe desired width and in which provision is made for firmlyretaining the sections in assembled relation on the arbor in anefiicient and superior manner. i l

. With this general object in View and such oth- ,ers'as may hereinafterappear, the invention con- ,1 sis'ts'in theebufing wheel and in thevarious struc- 'tures, arrangements and combinations of partshereinafter described and particularly defined in the claims at the endof this specification. l Inthe drawings illustrating the preferredembodiment of the invention, Fig. 1 is a side elevation in cross,section of a buffing wheelembody- "ing the present invention; Fig. 2 isan end view of a preferred form of bufiing wheel section embodied in thebuffing wheel shown inFig. 1; Fig. shape view and Fig. 4 acrosssectional view on theline 4-4 of Fig. 3 of a clinching collar embodiedin the present bufiing wheel; Fig. ,5 is a sideelevation in crosssection of a modified form of buffing'wheel embodying the presentinvention; Fig. 6 is an end view of a modified form of bufiing. wheelsection embodied in the buffing wheel shown in Fig. 5; Fig. '7 is anenlarged end view, as seen from the line 'l--'I of Fig. 6 illus-.trating one form of buifing element employed in the present bufiingwheel sections; Fig. 8 is a ,"similar view illustrating 'amodifiedformof bufary 'l, 1939. A plurality of individual wheel sec-;

'tions may be mounted on anarbor and clamped togetherto form a buflingwheel having a face of any desired width.

vAs further illustrated in my United States Patent No.,.2,350,216 issuedMay 30, 1944it has been V thepractice in making individual wheelsections to secure the closedring of radially extended buifing elementsto a fiat metal disc or centering member, having a central hole formounting upon -theggarbor preferably by means of staples, thev '3Claims. (o1. 51-193) latter serving to further secure adjacent elementstogether to assist in preventing the buffing elements from beingdisplaced from the ring section during use. Such individual ringsections were then placed on an arbor and clampedtogether face to face,the compression of adjacent ,sections serving to prevent relativerotary'displacement of the several ring sections.

While thev above construction provides a rigid and. ef-

separate clinching collars interposed between successive buffing ringsections and which are arranged to engage the inner ends of the bufiingelements of the ring sections to clinch and retain the sections securelyin place on the arbor when the sections are clamped thereon.

Referring now to the drawings, and particularly to Fig. 1, a buffingwheel embodying the present invention comprises an arbor ill on which aplurality of individual circular buffing sections qindicatedgenerally at12, are mounted, eachbuffing section comprising a plurality of connectedand radially extended cloth bufiing elements [4. In practice, the clothbufiing elements may be held together at or near one end thereof bywires l6 woven aroundtheindividual bufiing'elements .to form a chain ofconnected elements, as shown in Fig. 10. The requisite length of such achain of connected bufiing elements may be formed into a circular shapeand joined at its endsto form:a closed ring comprising a buffingsection. .The

clothbuifing elements l4 may be of the folded typeas illustrated in Fig.7, either with or without the stitching indicated at id, or, theelements may comprise a plurality of superimposed layers or strips ofcloth, and the assembly may ,be stitched together as shown at 20 in Fig.8 if desired.

In the embodiment 'of the inventionshown Fig. 1 the diameter of theopening 22 formed in the'ring section i2 may and preferably willcorrespond'to the diameter of the arbor ill on which the sections aremounted, and, in accordance with the present invention, a clinchingcollar comprising a disc 24 having a laterally extended and preferablytapered flanged portion 26 at its peripheral edge and provided with acentral opening 28 arranged to slidingly fit over the arbor ID,

.is-interposed between adjacent ring sections l2.

3 The clinching collars may and preferably will be of an outsidediameter such as to present the flanged portion 26 outside or beyond thecircle defined by the weaving wires I6 connecting the ends of thebufiing elements of a bufling Wheel section.

As shown in Fig. l, the arbor Ill may be secured to a rotary drivenmember 30 in any usual or preferred manner, the arbor being herein shownas provided atone" end with a threaded portion 32 arranged to bereceived in "a tappedhole formed in the driven member 30. The other .endof the arbor may be supported in a detachable bearing member indicatedgenerally at $34.; @In assembling the present bufling wheel on, thearbor, a supporting collar 36 is' first s'ecdredto the attached end ofthe arborand; thereafter ring sections l2 and clinching collars 24 arealternately placed upon the arbor with thefia'n'ged portions 26extended'in the direction of the ata tached end of th'evarbor...washer-f38spreierably of ai size@larger-than the'collar isthemplac'ed.OVGI' the essembled group of bufling wheel: sec- .vti'ons I 2 and i theinterposed clinching collars 24 wand-theentire unit is compressedlaterally on a-the arbor by: clamping nut-- w'which-cooperates=withranintermediate "threaded: prti0n 42= of the arbor. g With thisconstruction it will beseen that iupon; oIamping of the rings sectionsas described and;underwsubstantial pressure the flanged-por-u vtions{26hr the inte'rposed clinching. collars will I ,PIGSSI intov thebufling material and clinch it betweenzlthe flange and the iback face 0fanadja- :cent collar.- to; firmly :l'iold i the. buffing elements riiombeing-withdrawn andatoprevent rotarydisfi corresp'onding=tothe:diameter of the arbor ;andattached to 1 the 1 inner marginal 1 edge ofthe ringy--se0ti0n by i a; few -'relative1y small staples 4B tsufiicientto-temporarily support the ring sectlons concentrically on'th'e arborduring the clamping -;and clinching operation. The clinching collars 1324 are also made correspondingly larger-in diam- -;eterto dispose theflanged portions 26 beyond the dime oiithe .weavin'gwires, as -shownin-*Fig.-5. whey-buffing wheel is assembled on. the arbor in a manner:similar to that "above described, the .interposed -flanged collars 24serving to olinch .l-an d retain the ring sections in assembled relation-on the arbor when-firmly compressed and 1 clamped by the clamping nut4'U.

Fig; "9 illustrates another embodiment of 'the invention, wherein "theinside "diameter of the closed ring section is substantially greater?than the diameter of the arbor. As herein shown, the ring sections l2may be mounted and clamped on a hollow cylinder or tube 50 havinganoutside diameter corresponding to the inside diameterof theenlargedring sections and the clinching col- ..lars. The tubular-member 50 is@provided with bushings 52 arranged to slidingly fit over the arborLand. in practice,-the ring sections I2 and the interposedclinchingcollars=24 may and preferably. :will 'be,-mi)lll'lted. and compressed on"the 1 hollow cylinder -50 between retaining collars 54, 56 to form aunitary buffing wheel adapted to be slipped onto the arbor as a unit andsecured thereon by the clamping nut 40.

From the above description, it will be observed that the present bufiingwheel provides an efficient and superior construction for clamping andretaining individual buffing wheel sections in assembled relation on anarbor and in a manner such as to prevent withdrawal of the bufilng ele-"ments orrotarydisplacementioffthe sections with "relation toone'another'withontthe use of staples or equivalent fastening means.Although the in- "dividual ring sections herein illustrated anddefisc'ribed comprise a plurality of connected and .lfadially extendedbuffing fingers, it will be ap- "parent that the sections may comprisethe usual continuous-cloth rings if desired. It will be understood thatworn buffing Wheel sections l2 may "be replaced by new sections usingthe same spacing and clinching collars 24 to make up the newbu-fiing'wlieel.

While the preferredembodimentof the'-'invenlt-ion has been 1 hereinillustrate'd and -'-des'c"ribed, it =wl11 bennde'r'stoo'd thattheinvent-i'on may be em bodierl-in-othe1 forms"*w'ithin the scope 'ofthe following claims.

Havingthus described "the invention, what is claimed is:

1. As anew-article of'manufacture, a bufli'ng wheel comprising an arbor,a plurality of-individual bufiing wheel sections mounted upon the 1arbor, each section comprisinga closed ring of 'c'onne'cted and radially"extended cloth 'bdfling elements, --separate clinching 1c'ollarsinterposed between adjacent buflin'g wheel sections onthe arbor,--a-nd rneans 'for -'-c'lam-ping the assembled unit 1 upon the -=arborto-c'l'ampthe sections bet-We'en 'adj acent collars, each" of saidclinching col- 1 lars e'em'prising a' flatcircular disc having-alater-ally extende'dcntinuous flange at its outer periphery arraI-i-ge'dtopress-Without piercing into the --buifingniaterialbeyond the line erconnec- 'tio'n ei-said b'ufling elements, said individual bufiingelements being detachednndfree"t'o'flex -board,- metal orthe like-havinga central opening with relation to one-anoth'er 'dur'ing thebufiingwithout piercing'intoran adjacent bufling section.

3. A buffing 'wheelw comprising-an arbor, a1plurality of individualbuffing wheelsections mounted upon the arbor, each sectioncbrfipriSing-awlsssd v1 ring of z 'oonnected and radially exten'd'edcloth 7 0v buffingi elements,separate clinching'collars'interalp'osedf-between adj aoent bui'lin'g wheel sections-en:the'arbor, and meansi-o'r' clamping-the "assembled f upon the arbor toclamp the 'sectiohs beitwe'en adjacent 'c'ollars, each otsa-idJclin'ching scollars comprising :1 a flat circular disk having a.

6 REFERENCES CITED The following references are of record in the file ofthis patent:

5 UNITED STATES PATENTS Number Name Date 247,171 Coy Sept. 20, 18811,152,180 Jarvis Aug. 31, 1915 1,573,961 Zucker Feb. 23, 1926 102,146,284 Churchill Feb. 7, 1939

